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- https://www.devex.com/people/what-is-the-24-hour-rule-for-lufthansa-help-2239736
- https://www.devex.com/people/what-is-the-24-hour-rule-with-lufthansa-get-help-2239951
- https://www.devex.com/people/what-is-the-24-hour-rule-with-lufthansa-new-ways-2240005
- https://www.devex.com/people/what-is-the-24-hour-rule-for-lufthansa-easy-to-speak-2240164
